Thermal Temperature And Expanding Velocity Of The Particle Emitting Source Analysis With Blast-Wave Model

High-energy heavy-ion collisions are the leading edge of science in physics, thesearch of quark-gluon plasma (QGP) produced in high-energy heavy-ion collisions isone of it’s tasks. Due to the duration of high-energy collisions, it can not be observeddirectly, so researches are often made by combing freeze-out phase of the particlecollision information and the theoretical model reaction process. Blast-Wave model, ahydrodynamic model, can describe well the hydrodynamic evolution of the collisionprocess with simple physical picture and simple operation process, so it is often usedby the researchers.The transverse mass spectrum of particle emission source includes the expansionof the particle velocity and the temperature information, but because of the twoanti-association, it is difficult to extract out of expansion rate and temperature of theparticle emission source from a single particle mass spectrum. The paper develops theuse of HBT radii Rsrelationship with the transverse mass changes including theassociation of expansion velocity and temperature and associated with thesingle-particle spectrum to extract the expansion rate and temperature. In this paper, weusing the central collision situation Blast-Wave model simulations generateinformation of particle sources at RHIC energy and discuss the π meson and Kmeson’s mass spectrum and Rs(MT) spectrum, and extract the corresponding expansionvelocity and temperature of the particle source. We also make use of datum of the πmeson at RHIC energy to examine this way, and extract the corresponding expansionvelocity and temperature of the particle source.In this paper, we also analyse the effects of the nonlinear equations of transversevelocity and gaussian transverse density distribution on the Blast-Wave model.Different transverse flow velocity and gaussian distribution all have different degreesof influence on the fitting results.